1     /** 2      * XPath获取属性值 3      * @param root 4      * @param xPath 5      * @return 6      */ 7     public static String getXPathAttributeValue(Element root, String xPath){ 8         XPathExpression
     
       pp = XPathFactory.instance().compile(xPath,Filters.attribute()); 9         return pp.evaluateFirst(root).getValue();10     }11 12     /**13      * XPath获取节点值14      * @param root 主节点15      * @param xPath XPath字符串16      * @return 没有找到返回null17      */18     public static String getXPathText(Element root, String xPath){19         XPathExpression
      
        pp = XPathFactory.instance().compile(xPath,Filters.text());20         return pp.evaluateFirst(root).getText();21     }22     23     /**24      * XPath获取节点25      * @param root 主节点26      * @param xPath XPath字符串27      * @return 没有找到返回null28      */29     public static Element getXPathNode(Element root, String xPath){30         XPathExpression
       
         pp = XPathFactory.instance().compile(xPath,Filters.element());31         return pp.evaluateFirst(root);32     }33     34     /**35      * XPath获取节点集合36      * @param root 主节点37      * @param xPath XPath字符串38      * @return XPath得到的节点集合39      */40     public static List
        
          getXPathNodes(Element root, String xPath){41         XPathExpression
         
           pp = XPathFactory.instance().compile(xPath,Filters.element());42         return pp.evaluate(root);43     }
         
        
       
      
     

JDom2的Xpath的获取关键在XPathExpression、XPathFactory身上.